You, a tech startup with millions in angel finance: made an app to turn handwritten maths into TeX.
Me, just the worst kind of smart alec: convinced a pen #plotter to turn TeX into handwritten maths
Curve fitting - this needs to be shared here :-)
By the great xkcd
https://imgs.xkcd.com/comics/curve_fitting_2x.png
In this talk I show how to multiply quaternions AND ALSO OCTONIONS using the dot product and cross product of vectors in 3 dimensions:
https://www.youtube.com/watch?v=JI5xPGN_sWo
For quaternions this is well-known, but for octonions it's less so.
I sketched the proof that both these algebras have a norm obeying:
|ab| = |a| |b|
But you want to see the details, go to the proof of Theorem 2 here:
https://golem.ph.utexas.edu/category/2020/07/octonions_and_the_standard_mod_1.html
I do the proof for octonions, but the same argument also works for quaternions!
The last couple of days I've been experimenting with the modes on my phone. The "do not disturb" while sleeping is fine but my choices for the "driving" mode might need some work. I thought the reading out of whatsapp messages might be useful, particularly on the way in and out of said place.
Turns out I have a new found additional understanding of what VI people with screen readers are going through. When you've had the nice lady in your phone read "upward pointing finger with palm facing outwards" ten times because one of your colleagues likes to emphasise his messages with a follow-up screen full of ☝️ you begin to feel a fraction of their pain.
I have the option of turning off the reader. Not everyone does. I'll be thinking about that.
I feel there ain't enough #origami here on Mastodon, so I decided to make myself an origami challenge, hoping more will join:
Fold and post every model from a specific book of your choice.
I will start from the book in the picture, which I got as a present and came with really lovely papers!
Boosts welcome, and join me with the hashtag #origami_challenge
A while ago, my son asked me how to draw using the two-point perspective technique…
"I haven't got the slightest idea", was my honest answer (kids need to know we don't know everything, after all)
Could have left it at that. Instead we went on YouTube, one thing led to another, and…
…anyway, here's the answer, using a program which uses Python's `turtle`
#Python #programming #coding #LearnPython #LearnToCode #drawing #perspective
https://thepythoncodingbook.com/2022/04/10/understanding-two-point-perspective-drawing-using-python/
"It was late in 1972 — a year in which the science of genetic engineering really began to sizzle — that two California researchers announced the unusually tidy transfer of genetic information from one bacterium to another with help from a specialized enzyme. It was a scientifically heralded result, but behind the hoopla was just one small catch. The information transferred enabled a common human disease bacterium, E. coli, to resist not just one antibiotic, but two.
“Alarm bells should have rung,” writes @matthewcobb, in his deeply researched and often deeply troubling history of gene science."
https://www.nytimes.com/2022/11/14/books/review/as-gods-matthew-cobb.html
"Try reading the following out loud:
Hashtag screenreaders for the hashtag blind and hashtag VisuallyImpaired read every hashtag HashTags out loud and so it's hard for people with hashtag VisualImpairment to get the sense of the post because it's being constantly interrupted by well-meaning hashtag accessibility hashtag allies.
Easier to read with a block of hashtags at the bottom:
#screenreaders #VisuallyImpaired #blind #allies #Hashtags #accessibility"
--original author unknown
#ttrpg idea: you are all pets/familiars, looking after your hapless humans. The humans think they're the protagonists, but they're only alive because of your diligent and adorable work.
#tip for those #newToMastodon:
looks like, at least around here, the boost button may work as a toggle, should you have accidentally boosted something and couldn't figure out how else to interact with the boosted toot to remove it.
(I seem to hit more things accidentally here than I do elsewhere)
Had trouble choosing a mastodon instance? I got GPT-3 to generate some new possibilities.
flounder.club
Members discuss all different forms of flounder, from deep-sea to land-based.
dinosaur.pocket
All messages must consist of the two letters 'D', for fear that the dinosaurs will eat people's pocketbooks.
frozen.forest
Users must provide a source of warmth in order to post.
https://www.aiweirdness.com/ai-designed-mastodon-communities/
Let's launch this Mathstodon feed with a shameless plug:
The Mathy 2023 t-shirt recognizes various mathy days in the coming year ... Plus-Equals Days, Equals-Minus Days, Times-Equals Days, Arithmetic Progression Days, Palindrome Days (including Palindrome Fest!), as well as Pi, Tau, (two!) Fibonacci, and (many) Primes Days.
https://teespring.com/mathy2023
(I appreciate your support!)
@RYMAN_BADGUY piggybacking on what Trinsec said, there's also a way to browse other servers' local feed from within qoto. Assuming you're using the web interface, in the federated feed the "meatball" option on a toot offers an **Open [server] timeline** option, and if you like a server (or have found it via other browsing), you can add it to your menu at the top for easy access in preferences (Preferences > (from menu again) Favourite Domains).
(you can also follow people from different servers to have them show up in your home feed)
@christianp For some reason I really like palindromic mileages.
(Which I am nowhere near but I thought I'd ~boost via QT this)